diff --git a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_construct_point_3.h b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_construct_point_3.h
index d8f8476b6b4..6fef0da266d 100644
--- a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_construct_point_3.h
+++ b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_construct_point_3.h
@@ -47,6 +47,10 @@ public:
   p.z()+(_dom.zmax()-_dom.zmin())*o.z());
   }
 
+  const typename K::Point_3&
+  operator()(const typename K::Weighted_point_3 & p) const
+  { return p.rep().point(); }
+
 private:
   Iso_cuboid_3 _dom;
 };